Improvement in seesaws



rights.

UNITED STATES PATENT OEEICEe N. JOsEPH EATON, or HAETEOED, CONNECTICUT.

IMPROVEMENT IN SEESAWS.

Specification forming part of Letters Patent No. 149,847, dated April2l, 1874 application filed March 13, 1874. v

" following is a specification, referencebeing had to the accompanyingdrawings, where- Figure 1 is a side view of a seesaw embodying my saidimprovements. Fig. 2 is a top view of the same. Fig. 3 is aview of thesame in cross-section on the plane denoted by the dotted line x x,looking in the direction indicated by the arrow.

The invention is an apparatus wherebythe lever or teeter can be adjustedlongitudinally so as to balance persons of diiferent weights, and havingseats so pivoted-to the ends of the lever as to remain level during theoscillations of the lever. 4

The letter a indicates a supporting-post firmly set on its base, on thetop of which is fastened, as by screw a', a socketpiece, b, having ahorizontal base and two side up- This. socket-piece is, by preference,of cast metal. In the tops of the two side uprights are sockets orbearings l1. The letter c indicates a mortised block, preferably of eastmetal, having two trunnions, c', on the sides, tting into the bearingsor sockets b. Through the mortised block c is inserted the lever cl,there being a screw, e, running through the top of the mortised blockand bearing on the lever, whereby the lever is secured in place in themortised swing-block c. The lever can be adjusted longitudinally in theswing-block c, and thus made to balance for two persons of differentweights. To each end of the lever is pivoted a seat, j', depending by anarm, f1, swinging on the pin or screw f 2, driven through into thelever, the ends of which are shod with metal bands d.

I have shown the seats f as being dat. They can be made thus, orfashioned so as to partially embrace the person, like the seats ofmowing-machines; or the seat proper can be made separate, of any desiredpattern, and screwed or otherwise fastened to the iiat seats f; The twoseats are pivoted upon opposite sides of the lever, so that there may benoltendency to turn the lever over upon one sic e.

I claim as my inventionl. The combination of the socket-piece b, havingbearings b', the swing-block c, having trunnions c', the screw c, andthe lever d, all constructed, arranged, and designed to operatesubstantially as described.

2. The combination of the tilting lever d with the seats f, dependingfrom and pivoted to opposite sides of the lever, substantially asdescribed.

N. JOS. EATON.

Witnesses:

WM. EDGAR SIMONDs, JOHN POLLITT.

